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[bug:1193929] GlusterFS can be improved #9

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amarts opened this issue Feb 22, 2020 · 1 comment
Open

[bug:1193929] GlusterFS can be improved #9

amarts opened this issue Feb 22, 2020 · 1 comment
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Migrated Type:Bug

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@amarts
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amarts commented Feb 22, 2020

bugzilla-URL: https://bugzilla.redhat.com/1193929
I hope this bug is never fixed.

The upstream patch process requires that each patch have an associated bug ID before it can be merged. However, there is no requirement that the bug contain any information or receive any kind of signoff before the patch can proceed. As a result, many of our developers have the habit of creating such "placeholder" bugs every time they want to make a change, even if it's just a random cleanup/idea and not an actual bug fix or requested/tracked feature request. Also, any patch with the dreaded "rfc" bug ID (which would be appropriate for such changes) is unlikely to be reviewed.

This bug exists to satisfy our process requirement, without the additional negatives of clogging up our triage/tracking processes and making it appear that the code has more bugs (which would be bad) when in fact a developer had more ideas (which is generally good).
@amarts
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amarts commented Feb 22, 2020

{'bug_id': 1193929,
'count': 975,
'creation_time': <DateTime '20200219T06:53:43' at 0x7f09d153e128>,
'creator': 'bugzilla-bot',
'creator_id': 399691,
'id': 13624648,
'is_private': False,
'tags': [],
'text': 'REVIEW: https://review.gluster.org/24115 (ganesha-ha: updates for '
'pcs-0.10.x (i.e. in Fedora-29 and RHEL-8)) merged (#4) on master by '
'soumya k',
'time': <DateTime '20200219T06:53:43' at 0x7f09d153e048>}

amarts pushed a commit that referenced this issue Jun 22, 2020
@dmantipov @amarts
rpc: fix undefined behaviour in __builtin_ctz
ab2fe47 
Found with GCC UBsan:

rpcsvc.c:102:36: runtime error: passing zero to ctz(), which is not a valid argument
    #0 0x7fcd1ff6faa4 in rpcsvc_get_free_queue_index /path/to/glusterfs/rpc/rpc-lib/src/rpcsvc.c:102
    #1 0x7fcd1ff81e12 in rpcsvc_handle_rpc_call /path/to/glusterfs/rpc/rpc-lib/src/rpcsvc.c:837
    #2 0x7fcd1ff833ad in rpcsvc_notify /path/to/glusterfs/rpc/rpc-lib/src/rpcsvc.c:1000
    #3 0x7fcd1ff8829d in rpc_transport_notify /path/to/glusterfs/rpc/rpc-lib/src/rpc-transport.c:520
    #4 0x7fcd0dd72f16 in socket_event_poll_in_async /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2502
    #5 0x7fcd0dd8986a in gf_async ../../../../libglusterfs/src/glusterfs/async.h:189
    #6 0x7fcd0dd8986a in socket_event_poll_in /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2543
    #7 0x7fcd0dd8986a in socket_event_handler /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2934
    #8 0x7fcd0dd8986a in socket_event_handler /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2854
    #9 0x7fcd2048aff7 in event_dispatch_epoll_handler /path/to/glusterfs/libglusterfs/src/event-epoll.c:640
    #10 0x7fcd2048aff7 in event_dispatch_epoll_worker /path/to/glusterfs/libglusterfs/src/event-epoll.c:751
    ...

Fix, simplify, and prefer 'unsigned long' as underlying bitmap type.

Change-Id: If3f24dfe7bef8bc7a11a679366e219a73caeb9e4
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Fixes: #1283
amarts pushed a commit that referenced this issue Jun 22, 2020
@dmantipov @amarts
cli: fix data race when handling connection status
2e34167 
Found with GCC ThreadSanitizer:

WARNING: ThreadSanitizer: data race (pid=287943)
  Write of size 4 at 0x00000047dfa0 by thread T4:
    #0 cli_rpc_notify /path/to/glusterfs/cli/src/cli.c:313 (gluster+0x40a6df)
    #1 rpc_clnt_handle_disconnect /path/to/glusterfs/rpc/rpc-lib/src/rpc-clnt.c:821 (libgfrpc.so.0+0x13f04)
    #2 rpc_clnt_notify /path/to/glusterfs/rpc/rpc-lib/src/rpc-clnt.c:882 (libgfrpc.so.0+0x13f04)
    #3 rpc_transport_notify /path/to/glusterfs/rpc/rpc-lib/src/rpc-transport.c:520 (libgfrpc.so.0+0xf070)
    #4 socket_event_poll_err /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:1364 (socket.so+0x812c)
    #5 socket_event_handler /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2958 (socket.so+0xc453)
    #6 socket_event_handler /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2854 (socket.so+0xc453)
    #7 event_dispatch_epoll_handler /path/to/glusterfs/libglusterfs/src/event-epoll.c:640 (libglusterfs.so.0+0xcaf23)
    #8 event_dispatch_epoll_worker /path/to/glusterfs/libglusterfs/src/event-epoll.c:751 (libglusterfs.so.0+0xcaf23)
    #9 <null> <null> (libtsan.so.0+0x2d33f)

  Previous read of size 4 at 0x00000047dfa0 by thread T3 (mutexes: write M3587):
    #0 cli_cmd_await_connected /path/to/glusterfs/cli/src/cli-cmd.c:321 (gluster+0x40ca37)
    #1 cli_cmd_process /path/to/glusterfs/cli/src/cli-cmd.c:123 (gluster+0x40cc74)
    #2 cli_batch /path/to/glusterfs/cli/src/input.c:29 (gluster+0x40c2b9)
    #3 <null> <null> (libtsan.so.0+0x2d33f)

  Location is global 'connected' of size 4 at 0x00000047dfa0 (gluster+0x00000047dfa0)

Change-Id: Ie85a8a80a2c5b82252c0c1d45e68ebe9938da2eb
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Fixes: #1311
amarts pushed a commit that referenced this issue Aug 12, 2020
@dmantipov @amarts
rpc: fix undefined behaviour in __builtin_ctz
3db89cf 
Found with GCC UBsan:

rpcsvc.c:102:36: runtime error: passing zero to ctz(), which is not a valid argument
    #0 0x7fcd1ff6faa4 in rpcsvc_get_free_queue_index /path/to/glusterfs/rpc/rpc-lib/src/rpcsvc.c:102
    #1 0x7fcd1ff81e12 in rpcsvc_handle_rpc_call /path/to/glusterfs/rpc/rpc-lib/src/rpcsvc.c:837
    #2 0x7fcd1ff833ad in rpcsvc_notify /path/to/glusterfs/rpc/rpc-lib/src/rpcsvc.c:1000
    #3 0x7fcd1ff8829d in rpc_transport_notify /path/to/glusterfs/rpc/rpc-lib/src/rpc-transport.c:520
    #4 0x7fcd0dd72f16 in socket_event_poll_in_async /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2502
    #5 0x7fcd0dd8986a in gf_async ../../../../libglusterfs/src/glusterfs/async.h:189
    #6 0x7fcd0dd8986a in socket_event_poll_in /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2543
    #7 0x7fcd0dd8986a in socket_event_handler /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2934
    #8 0x7fcd0dd8986a in socket_event_handler /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2854
    #9 0x7fcd2048aff7 in event_dispatch_epoll_handler /path/to/glusterfs/libglusterfs/src/event-epoll.c:640
    #10 0x7fcd2048aff7 in event_dispatch_epoll_worker /path/to/glusterfs/libglusterfs/src/event-epoll.c:751
    ...

Fix, simplify, and prefer 'unsigned long' as underlying bitmap type.

Change-Id: If3f24dfe7bef8bc7a11a679366e219a73caeb9e4
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Fixes: #1283
amarts pushed a commit that referenced this issue Aug 12, 2020
@dmantipov @amarts
cli: fix data race when handling connection status
2ef7518 
Found with GCC ThreadSanitizer:

WARNING: ThreadSanitizer: data race (pid=287943)
  Write of size 4 at 0x00000047dfa0 by thread T4:
    #0 cli_rpc_notify /path/to/glusterfs/cli/src/cli.c:313 (gluster+0x40a6df)
    #1 rpc_clnt_handle_disconnect /path/to/glusterfs/rpc/rpc-lib/src/rpc-clnt.c:821 (libgfrpc.so.0+0x13f04)
    #2 rpc_clnt_notify /path/to/glusterfs/rpc/rpc-lib/src/rpc-clnt.c:882 (libgfrpc.so.0+0x13f04)
    #3 rpc_transport_notify /path/to/glusterfs/rpc/rpc-lib/src/rpc-transport.c:520 (libgfrpc.so.0+0xf070)
    #4 socket_event_poll_err /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:1364 (socket.so+0x812c)
    #5 socket_event_handler /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2958 (socket.so+0xc453)
    #6 socket_event_handler /path/to/glusterfs/rpc/rpc-transport/socket/src/socket.c:2854 (socket.so+0xc453)
    #7 event_dispatch_epoll_handler /path/to/glusterfs/libglusterfs/src/event-epoll.c:640 (libglusterfs.so.0+0xcaf23)
    #8 event_dispatch_epoll_worker /path/to/glusterfs/libglusterfs/src/event-epoll.c:751 (libglusterfs.so.0+0xcaf23)
    #9 <null> <null> (libtsan.so.0+0x2d33f)

  Previous read of size 4 at 0x00000047dfa0 by thread T3 (mutexes: write M3587):
    #0 cli_cmd_await_connected /path/to/glusterfs/cli/src/cli-cmd.c:321 (gluster+0x40ca37)
    #1 cli_cmd_process /path/to/glusterfs/cli/src/cli-cmd.c:123 (gluster+0x40cc74)
    #2 cli_batch /path/to/glusterfs/cli/src/input.c:29 (gluster+0x40c2b9)
    #3 <null> <null> (libtsan.so.0+0x2d33f)

  Location is global 'connected' of size 4 at 0x00000047dfa0 (gluster+0x00000047dfa0)

Change-Id: Ie85a8a80a2c5b82252c0c1d45e68ebe9938da2eb
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Fixes: #1311
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@amarts